Add init() to avoid crash when creating ref in constructor.

This reverts commit 50899fb2696d2bb98a4807a237e124f566293f57.

Bug: 195717690
Fix: 195717690
Test: atest VtsHalTvTunerTargetTest
Change-Id: Icae435f1166e6cf2e2f235979e3d1d37d182d517
diff --git a/tv/tuner/aidl/default/Tuner.h b/tv/tuner/aidl/default/Tuner.h
index e69990d..7af7ab8 100644
--- a/tv/tuner/aidl/default/Tuner.h
+++ b/tv/tuner/aidl/default/Tuner.h
@@ -63,6 +63,7 @@
     void frontendStopTune(int32_t frontendId);
     void removeDemux(int32_t demuxId);
     void removeFrontend(int32_t frontendId);
+    void init();
 
   private:
     // Static mFrontends array to maintain local frontends information